Simi Valley regulates outdoor lighting to minimize light pollution and glare affecting neighboring properties. The city's Development Code includes standards for shielding, intensity, and direction of exterior lighting on residential and commercial properties.
The Simi Valley Development Code establishes outdoor lighting standards for all new development and exterior lighting modifications. Residential exterior lighting must be shielded and directed downward to minimize light trespass onto neighboring properties and upward glare into the night sky. Security lights and motion-activated fixtures must not shine directly into neighboring windows or across property lines. Maximum illumination at the property line is typically limited to 0.5 foot-candles for residential zones. Parking lot and commercial lighting requires full cutoff fixtures that direct light below the horizontal plane. The city reviews lighting plans as part of the development review process for new construction and significant renovations. Mercury vapor and unshielded high-intensity fixtures are discouraged.
Light trespass complaints are addressed by Code Enforcement. Property owners receive a notice to redirect or shield offending fixtures within 30 days. Non-compliance results in fines starting at $100. New development that does not meet lighting plan requirements may not receive final inspection approval.
Simi Valley, CA
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Side-by-side rule comparisons with other cities in Ventura County.
See how other cities in Ventura County handle dark sky rules.
See how Simi Valley's dark sky rules rules stack up against other locations.
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